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On 12月17日, the following important behind-the-scenes events were known to have occurred:
- 1965 - "Golden Death" was recorded at BBC Television Centre Studio 3. (TCH 6)
- 1966 - Episode three of The Highlanders was recorded at Riverside Studios 1. (TCH 9)
- 1967 - Nicholas Courtney filmed his first scenes as Colonel Lethbridge-Stewart for The Web of Fear, on location near Old Covent Garden.
- 1968 - Pre-filming for The Seeds of Death continued on Stage 2 of Ealing Studios. (TCH 14)
- 1971 - Pre-filming for The Curse of Peladon took place on Stage 2 of Ealing Studios. (REF: Doctor Who The Handbook: The Third Doctor)
- 1974 - Studio filming for Revenge of the Cybermen took place at BBC Television Centre 3. (REF: Doctor Who The Handbook: The Fourth Doctor)
- 1980 - Location filming for Logopolis took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
- 1983 - Studio filming for The Caves of Androzani took place at BBC Television Centre studio 6. (REF: Doctor Who The Handbook: The Fifth Doctor)
- 1994 - Writer Robert deLaurentis submitted the first draft of his script for the 1996 TV movie, based on his 7 October storyline. He titled this draft Dr. Who?. In Dr. Who?, Daleks were now shape-shifting humanoids, and the Doctor's TARDIS has a working chameleon circuit — briefly. The Doctor's other companion, Sherman, is trapped on Skaro and is later discovered to have died. This next draft on 3 February finally stretched things a little too far.
- 2009 - Recording for Jago & Litefoot: Series One took place at The Moat Studios.
- 2010 - Recording for Heroes of Sontar took place at The Moat Studios.
- 2012 - Recording for Smoke and Mirrors took place at The Moat Studios.
- 2014 - Recording for Last of the Cybermen took place at the Moat Studios.
- 2016 - Big Finish confirmed the UNIT: The New Series audio box set Assembled.
- 2018 - Recording for Sargasso took place at The Soundhouse.
- 2018 - Big Finish's Gallifrey audio anthology Time War: Volume Three was recorded.
- 2019 - Recording for Wicked Sisters took place at the Moat Studios.
- 2020 - Big Finish's UNIT: Nemesis box set Between Two Worlds was recorded.
- 2021 - Big Finish's audio anthology Stranded 4 was recorded at PRL Studios.
- 2021 - Big Finish's Gallifrey: War Room audio anthology Allegiance was recorded.